James swihart



(Model.)

J. SWIHART.

LOCK..

No.' 441,602. PatentedN-omz, 1890.

UNITED STATES PATENT OFFICE.

JAMES SVIIIART, OF RIOTA, OHIO.

LOCK.

SPECIFICATION forming part of Letters Patent No. 441,602, dated November 25, 1890. Applicationiiled April 30,1890. Serial No. 350,087. (Model.)

To all whom it may concern:

Be it known that I, JAMES SWIHART, a citizen of the United States of America, residing at Riota, in the county of Preble and State of Ohio, have invented certain new and useful Improvements in Locks; and I do hereby declare the following to be a full, clear, and eX- act description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, and to letters of reference marked thereon, which form a part of this speciiication.

My invention relates to certain new and useful improvements in combined locks and latches.

The object of the invention is to provide a lock for doors in which a sliding bolt can be set so as to be actuated manually or locked to require a predetermined number of turns of the key to release said bolt, as will be hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a plan view 0f a combined latch and lock constructed in accordance with my invention, the covering-plate of the casing being removed. Fig. 2 is a sectional View taken through the line a' fr of Fig. l. Fig. 3 is a detail view of one of the removable ratchetwheels.

The casing A, except wherein speciiied, is of ordinary construction, and is adapted to inclose the operative portions of the lock and be covered by a removable plate. This casing has openings a a., through which the latchbar is shot, and openings a a through which the ends of the bolt pass, as well as an opening a2, through which the projecting portion of the bolt passes, so that said bolt can be grasped and moved to throw it in or out of engagement with the keeper.

The latch-bar B may be of ordinary construction, and is operated by a knob and spindle having a hub b with a projection which engages with the recess or notch in said latch-bar. This latch-bar is reversible, and may be thrown in either direction by the spring B', which contacts with a pin carried by the latch-bar, said spring being mounted on a pin b', as shown, so that one end will engage with the lock-casing.

The lock-casing A is constructed so as to be reversible, and the interior thereof is cast or formed with a series of pins, projections, and bearings, as shown, for supporting the operative parts of the lock and latch, as well as additional wheels, which may be placed and stored within the casing for changing the combination when desired.

C refers to the lock-bolt, which is provided with recesses c c and an operating-knob C', which projects through the opening a? in the easing A. This lock-bolt lies under the plate D and is held against movement by a spring e, which has near its end a projection c', which engages with the beveled portion of the knob C within the casing, so that the lock-bolt when free can be moved manually and will be held against slipping. Thelockbolt near its ends is recessed to engage with projections formed on the casing to limit the thrust thereof, though it is evident this may be accomplished by the sides of the opening i a2 in the casing, against which the edges of the knob C can abut.

D refers to a plate which is rigidly securedv by means of screws to projections formed on the casing, and one end of this plate has a Wedge-shaped projecting portion D attached thereto or formed integral therewith, and centrally this plate D is extended, as shown at D2, and is provided with an opening through which the stem or bar F passes, and adjacent to this openinga raised portion d2 is provided,

vided with notches c' and i at one end, which engage with the wedge-shaped projecting portion D of the plate D when in place, and

this sliding tumbler is capable of a slight pivotal movement thereon, being held in movable engagement therewith by a spring J'. The center portion of this tumbler has a notch I', with which the key or projecting portion f of the stem F engages to operate IOO said tumbler, and the opposite upper edge is provided with two ratchet-teeth 2, which engage with the teeth of the ratchet-wheel K. The ratchet wheels or disks K are interchangeable, and may be provided with varied number of teeth, as Well as plates or tins 7c, which are rigidly attached to the under side of said ratchet-wheels. These ratchet-wheels are moved when the tumbler I is actuated by the key in one direction and are held against rotation in an opposite direction by a springactuated pawl L.

The bar II, hereinbefore referred to, is normally thrown in engagement with the recessed portion c c of the lock-bolt by a spring 7L, and this sliding bar is notched at the portion which slides under the face of the ratchetwheel, so that when the ratchebwheel has been sufficiently turned the tins or projections 7a will engage with said notch and elevate the sliding bar Il out of engagement with the recesses in the lock-bolt, so that said lockbolt can be shot by hand.

The spindle F is journaled in the casing, and is provided with a spring m for the purpose of holding the same against accidental rotation. After the lock has been set by placing one of the desired ratchet-wheels upon the pin, the bar II being in engagement with the lock-bolt, the spindle F is turned by a proper key a certain number of times, which will cause the tumbler I to be moved backward and forward, and when this has been done the proper number of times one of the fins on the ratchet-Wheel will engage with the notch ofthe bar, so as to raise the same out of engagement with the recesses in the lockbolt, so that said lock-bolt may be moved by sliding the same manually. The number of movements necessary to free the lock-bolt is determined by the number of ratchet-teeth and fins or projections carried by the disk.

In practice the lock is made to be .reversible, and the casing is provided with pins, upon which can be placed additional ratchetwheels, so that the combination can be changed when desired.

The spindle F may be turned by an ordinary knob, and when such a knob is provided it will not be necessary to use a key.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In combination with a lock-bolt having a knob for actuating the same, which projects through the casing, and notches with which a sliding bar engages, a ratchet-disk having projections for engagement with said sliding bar, and a tumbler adapted to be moved by a key carried bya spindle, so that the ratchetwheel will be turned and the sliding bar ele vated when the spindle and tumbler have been actuated a predetermined number of times, substantially as shown, and for the purpose set forth.

2. The combination, in a lock constructed substantially as shown, of a lock-bolt having an actuating portion which projects through the lock-casing, and notches with which a movable spring-actuated bar engages for holding immovable the lock-bolt, a tumbler I, having notches t' and i', which engage with a projecting portion D of a fixed plate D, a recess I', with which a key engages, and ratchet-teeth i2, a disk K, having a series of ratchet-teeth and one or more plates or tins la, carried thereby, which are adapted to engage with the sliding bar to elevate the saine, and a spring-actuated pawl engaging with the ratchet-disk, the parts being organized substantially as shown, and for the purpose set forth.

3. rlhe combination, in a lock constructed substantially as shown, of a sliding lock-bolt having recesses with which a sliding bar engages for holding the same immovable, a plate D, having an opening through which the actuating-spindle F passes, a projecting portion D2, formed thereonto limit the turning of the key, a'kuife-edged projection D', which engages with the notches in the tumbler, said tumbler having a rounded portion between the notches and a notched portion I', with which the key carried by the spindle engages, a ratchet-Wheel carrying means for elevating a sliding bar I-I, and a spring-actuated pawl for engagement with the ratchet1 Wheel, substantially as set forth.

il. In a lock, the combination of a lock-bolt having a knob C', which projects through the casing, a spring e for engaging the beveled portion of said knob, recesses c c, formed in the lock-bolt, a spring-actuated bar I-I, having a notch with which a plate carried by a ratchet-disk engages to elevate said bar, a spring-actuated pawl L for preventing the rotation of the disk when the bar I'I is held elevated, a tumbler I, having ratchct-teeth and bearings t' and i', a spring J for holding said tumbler in engagement with the ratchetteeth and its bearing D', a spindle having a key for actuating said tumbler, so as to move the ratchet-Wheel, and a stop cl2 for preventing the entire rotation of the spindle and key, the parts being organized substantially as shown, and for the purpose set forth.

In testimony whereof Iaffix my signature in presence of two witnesses.

JAMES SWIHART.

Witnesses:

D. M. SvviHAn'r, R. W. QUINN.

IOO

IIO 

